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Thumbnail Tester
Preview YouTube thumbnails before you publish
A browser-only thumbnail tester and downloader: upload a local image, compare desktop and phone feed layouts, check light and dark modes, and save a PNG. YouTube links stay in the browser.
I built this to catch cropping and contrast problems before a thumbnail goes live. The preview and downloads run in the browser, so local images are not uploaded to this site.
About Thumbnail Tester on Product Hunt
“Preview YouTube thumbnails before you publish”
Thumbnail Tester was submitted on Product Hunt and earned 2 upvotes and 1 comments, placing #136 on the daily leaderboard. A browser-only thumbnail tester and downloader: upload a local image, compare desktop and phone feed layouts, check light and dark modes, and save a PNG. YouTube links stay in the browser.
On the analytics side, Thumbnail Tester competes within Design Tools and YouTube — topics that collectively have 279.7k followers on Product Hunt. The dashboard above tracks how Thumbnail Tester performed against the three products that launched closest to it on the same day.
Who hunted Thumbnail Tester?
Thumbnail Tester was hunted by Jasnek Jasnek. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of Thumbnail Tester including community comment highlights and product details, visit the product overview.
Jasnek Jasnek